<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>外边距所带来的问题</title>
		<style type="text/css">
			div{
				width: 400px;
				height:200px;
			}
			.box{
				background-color:pink;
			}
			.box2{
				backgrond-color:skyblue;
			}
		</style>
	</head>
	<body>
		<div class="box1">第一个盒子</div>
		<div class="box2">第二个盒子</div>
	</body>
</html>
